This 100% cotton Doo Rag is completely machine washable and will fit most people. Doo Rags are made to fit on your head with ties around back of head. They are great for kids, construction workers, welders, doctors and nurses, under helmets for cyclists, bikers, cancer patients/ survivors, wear to the gym, or just to protect your head from the sun and other elements. These are also great to use in the summer when the weather is hot. Just soak them in cool water, wring out excess water and wear - instant relief from the summer heat. Soak again as necessary to stay cool.